1321142432343 has 16 divisors (see below), whose sum is σ = 1772141607936. Its totient is φ = 875452858400.

The previous prime is 1321142432339. The next prime is 1321142432369. The reversal of 1321142432343 is 3432342411231.

It is a cyclic number.

It is not a de Polignac number, because 1321142432343 - 2² = 1321142432339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321142332343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21157618 + ... + 21219968.

It is an arithmetic number, because the mean of its divisors is an integer number (110758850496).

Almost surely, 2^{1321142432343} is an apocalyptic number.

1321142432343 is a deficient number, since it is larger than the sum of its proper divisors (450999175593).

1321142432343 is a wasteful number, since it uses less digits than its factorization.

1321142432343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104814.

The product of its digits is 41472, while the sum is 33.

Adding to 1321142432343 its reverse (3432342411231), we get a palindrome (4753484843574).

The spelling of 1321142432343 in words is "one trillion, three hundred twenty-one billion, one hundred forty-two million, four hundred thirty-two thousand, three hundred forty-three".